* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
      Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 1rem;
    line-height: 1.5;
  
    /* center*/
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  h1 {
    margin-bottom: 1.5rem;
  }
  
  .book-list {
    display: flex;
    flex-direction: row;
    gap: 2rem;
  }
  
  .book-cover {
    width: 150px;
  }
  
  .book-title {
    font-size: 1.2rem;
  }
  
  .book-author {
    color: gray;
    font-size: 0.8rem;
  }
  